Automatic APRS Waypoint Entry with Kenwood TH-D7 and Garmin GPS Devices
90 likes | 194 Vues
This guide explains how to enable automatic APRS waypoint entry using the Kenwood TH-D7 hand-held radio with Garmin GPS devices such as the Garmin GPS 12 and GPS III+. When connected, these devices can display APRS position data through the NMEA string '$GPWPL'. Example outputs such as '$GPWPL,5346.17,N,00030.15,W,M1BLR.*5C' illustrate the format of incoming positions that will be saved as waypoints. Note that while APRS symbols may look the same on devices, they are not transferred.
Automatic APRS Waypoint Entry with Kenwood TH-D7 and Garmin GPS Devices
E N D
Presentation Transcript
D700//D7A GPS jack TM-D700 menu: APRS: WAYPOINTS: 9 CHARACTER NMEA Automatic Waypoint Entry When connected to the Kenwood TH-D7 hand-held, the Garmin GPS 12 and Garmin GPS III+ support the automatic entry of APRS position data onto their displays. The NMEA string '$GPWPL' is output by the Kenwood TH-D7 - as shown in the examples below: $GPWPL,5346.17,N,00030.15,W,M1BLR *5C $GPWPL,5342.91,N,00027.05,W,N TOWE*36 $GPWPL,5344.03,N,00025.68,W,G0VRM*6B Incoming positions from the Kenwood TH-D7 are marked as a 'WAYPOINT'. Although the APRS symbols may appear similar to those of the GPS III+, they are not transferred. (The numbers following the '*' at the end of NMEA strings are checksums.)